Fireproof partition.



M. DAWSON. FIBBPROOF PARTITION. APPLIUATIOH FILED JULY 2a, 191s '1 102 883. Patented July 7,1914, s 4 SHEETS-BHEET 1.

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Patented July 7, 1914.

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Patented July 7, 1914.

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WITNESSE M. DAWSON.

FIREPROOP PARTITION. APPLICATION FILED JULY26,1913.

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w/mfssfs 7 I Amm/frs I 'MosE DAWSON, or Los ANGELES, cALIEoENIA.

FIREPROOF PARTITION.

.Specification of Letters Patent.

Patented July 7, 1914.

applicati@` med July 26, 1913. serial No. 781,385.

T0 apZZ whom it may concern Be it known that I, MosE DAwsoN, a citizen of the UnitedStates, and a resident of Los Angeles, in the county of Los Angeles and State of California, have invented a` new and Improved F ireproof Partition, ofI which the following is a specification.

My invention 'relates to lire proof partitions, my more particular purpose being-to produce a device of this character suitable 1 for assuming a large number of different .forms, and in which lightness, durability and strength are combined with cheapness, and in which the partition may be rendered comparatively thin, other things being equal.

More particularly stated my invention is a fire proof partition especially adapted for use in crowded oiicebuildings where the space requirements are exceedingly severe so that the partition must bemade very thin,

without unduel sacrifice of other desirable characteristics. p j

Reference is made to the accompanying drawings forming a part of this specifica` tion, and in which 'like letters indicate like parts.

Figure 1 is la front view of the skeleton frame work for one form of my improved fire proof partition having in this instance a doub-le wall. Fig. 2 'is a top plan viewof the frame work of another` form of my improved partition, which in this instance is provided with a single wall. Fig. 3 is a plan view of the partition shown in Fig. 1'. Fig. 4 is a section on theline 4 4 of Fig. 1 looking in the direction of the arrow. Fig. 5 is a fragmentary horizontal section through Qthe form of my invention in which a single wall is used. Fig. 6 is a fragmentary horizontal section through the form using the single wall, butin which the proportions of Vthe filling" material are somewhat different from those disclosed in Fig. 5. Fig. 6a is a fragmentary -horizontal section showing another form of my invention. Fig. 7 is a detail' showing one of the screeds for supporting mortar and gaging thickness thereof over Vthe metal roof as well as forming the lines to work to for straightening the Work. Fig. 8 is a fragmentary View showing partly in sect-ion and partly in elevation a screed of a form different from that in Fig. 7 Fig. 9 is aI fragmentary elevation-showin the lowerend of'A the screed shown in Flg. 8. Fig. 10 is a fragmentary plan view of one ofthe ioor plates.l Fig. 11 is a section on the line 11-11 of Fig. 10, looking in the direction of the arrow. Fig. 12 isa detail showing in fragmentary perspective one 0f the wall plates. Fig. 13 is a` fragmentary perspective showing still another form of screed, and Fig. 14 is a detail showing in fragmentary elevation an extension screed, that is, one which may be practically lengthened or shortened, and Fig. 15 is a cross section through one of the floor plates adjacent'to one of the screeds, and illustrating the engagement of the latter therewith.

The building walls, that is the permanent walls of the edifice, are shown at 15. At 16 are a number of screeds which are spaced apart and` disposed vertically. At 17 are screeds each of somewhat greater width than one of the screeds 16, as may be understood from Fig. 2. At 18 are two screeds of a somewhat different type from the screeds 16-17. At 19 is. a metallic lath, that is a reticulated metallic member serving the purposes of a setof laths and, connected with all of the screeds and certain other parts as hereinafter described.

A ceiling plate is shown at 20 and iis substantially U-shaped in cross section. A body of mortar is lled in at 22 and allowed to set or harden. The back 21 isnext filled Hush with the scr'eeds. Then after all the mortar has set, the finish coat is put over the face of the mortar and vadjacent edges of the virtually formed, these single walls being spaced apart by tie plates 23--24 The aggregate thickness of thev double wall thus formed may be controlled within reasonable limits by the length of the tie plates 23-24- thus employed. These tie plates are held in position by fastenin-gs 25-26, the lat-ter in turn being held in position by nails 27 or other appropriate fastenings. The fillings of the double wall are shown at 28-28 and may be provided with facings 28a-'28a for the purpose of improving the appearance ofthe partition. The fillings 28 may be extendedfalong the permanent wall 15 of the building as indicated at 29 in Fig. 4. At the bottom of the partit-ion, I employ floor plates 30 each havm in lcross-section substantially the form o an inverted U. I also employ wall plates 30 at the vertical edges of the partition, 'the wall plates 302l carrying the brackets 26 which are secured thereto by rivets 31. Similarly the tie plates 24 are connected with the, ceiling plates 20 by rivets 25, as may be understood from Fig. 4. The fioor plates 30 are connected in the same manner.

The wall plates 30a are provided with holes 53 l(See left of Fig. 4) for facilitating the application of tie Wires 32 in order toA TheVA hold the metal lath 19 in'.position. screeds 18 and 16 are provided with holes 34-35 for accomodating tie wires 33 which extend through these -holes and through the metal lath 19 in order to support the latter. The screeds 18 are pro-V v as shown in Fig. 1, these screeds aside from 30a is provided with holes 53 to facilitate thetheir length, being of substantially the same form as the screeds 16. At the bottoms of the short screeds 39 I use afdoor plate 40. At 41-42 are tie strips for the purpose of strengthening the partition. These tie strips are of especial service around a` door such as 43 in Fig. 1. l.

Tie Wires are shown at 44 and are used for holding the metal lath upon the ceiling plate 20, which for this purpose is provided with holes 45. Tie wires 46 are also used for holding the metal laths upon the screeds 16. In some instances tie wires completely encircle the screeds 16 as shown at 47, right -of Fig. 6. In other instances the tie wires 46 are merely passed through the holes 34 and 25 as above explained with reference to Fig. 4. In the form shown in Fig. 6a I apply the screeds 18 to a wall or a group of posts 48 A already in position. For this purposeihe screeds 18 and the metal lath 19 are placed against the posts and are held in position by nails 49. The filling50 is next placed in position and a facing 51 is then formed upo the filling 50. A

Each screed 16-17 is provided at its end with a slot 52 of the form shown in Figs. 8 and 9, for facilitating the mounting of the screed in position. Each 'wall plate application of the tie wires 46. Each wall plate 30a`is also provided with a horizontally Y disposed slot 54. The screeds 16-17 are each provided with horizontally disposed slots 55 for holding the binding strip 42. This binding strip when first placed in position has an arcuate form in cross-section, as indicated in the upper o rtion of Fig. 8. When, however, the bin ing strip is fiattened out by the aid of a hammer or mallet as appears at 42a in Fig. 8, the binding strip, thus flattened is clenched inposition and firmly holds itself in position relaayeiy' to the screeds through which it extends.

-Each ceiling plate 20' and floor plate 3O-isprovided with U-shaped Aslots 56, as indicated in Fig. 10, these slots being adapted to facilitate the connection of lower ends of the screeds`16-17, as will be understood from the lower portion of Fig. 8. Each floor plate and ceiling plate is furtherprovided 4with holes 57 for facilitating the application of tie wires 32 to hold the metal lathin position', as indicated at the bottom of 8.

In Fig. 14 I show an extensible screed. This screed is made of a plurality ofsections 57a, 58, 59, fitted telescopically together and severally provided with reverting 4portions 60, 61, 62, and with base portions 63, 64, 65.

secured firmly together, after which the reverting portions^61 are bent or, crimped at 67, thus further securing andsteadying the composite screed thus formed.

I find it convenient, in building the partition above described, to place the'fceilng plate 20 and the floor plate 30 in predetermined arbitrary positions indicated by -measurement and preferably by bringing each of them to 'a line marked on the floor or ceil-f ing. By doing this and applying a temporary prop, serving as a gage, to locate the middle or intervening portion of theI partition, or rather in buildingthe middle o1" intervening portion of the partition against the prop just mentioned, the partition as a .whole is rendered perfectly true and accurate. T/he temporary top, however, is not necessary unless the partition exceeds a height of 12 or 14 feet.

In applying the mortar it is a good idea to first place the filling 22`in position, bringing -the mortar to the face of the screeds on the thin side fir t. -Then after the mortar has set the heavf side 21 may be filled, to the face ofthe screeds. v

' Where the wall is to be single, as indicated in Fig. 5, I preferably apply the filling 21 of mortar so as to bring the outer surface of the same flush with the outermost portions of the screeds 17 and then apply the facing so as to cover .up the screeds and hide the r By aid of rivets 66 the telescopic sections are same. The thickness of the single wall may of the wall members may be made always the same if desired, the aggregate thickness of the wall being controlled by the distance the wall members are spaced apart, in other words, by the length of .the tie plates used.

The U form of the slots 56 enables the ceiling plates and tie plates to be used interchangeably and also to be used in a variety of different relations. This form for the slot enables the screeds 16-17 to be readily connected with the ceiling plates or floor plates and that too independent of lWhether said plates be for the one or the other of their two interchangeable uses.

I do not limit myself to the'precise construction shoWn as variations may be made therein Without departing from the spirit of my invention the scope of which is commensurate -With my claims.

I claim: p

l. A fire proof partition comprising floor plates and ceiling plates, a plurality of screeds connected with a floor plate and a ceiling plate, each of said screeds being provided with a longitudinal reverting edge engaging the adjacent side surface of the floor plate and the ceiling plate, a plurality of tie plates each extending from one of said screeds to another, and a metallic lath mounted upon said screeds, and supported thereby.

E2. A device of the character described, comprising a ceiling plate, a screed connected with the ceiling plate, said screed be ing substantially L-shaped in cross section and having a longitudinal reverting edge along one angular portion thereof engaging the adjacent side of the ceiling plate, a tie plate engaging said screed, and a metallic lath connectedwith the other angular portion of the screed, substantially as described.

In a tire proof partition, the combination of a pair of ceiling plates each having a substantial U-form in cross section, a tie plate extending from one of said ceiling plates to another', means for securing said tie plate to said ceiling plates, screeds having longitudinal reverting edges engaging the inner side surfaces of said ceiling plates, and metal laths mounted upon said screeds.

4. In a fire proof partition, the combination of a screed substantially L-shaped in cross section and one angular portion of which has a free angular reverting edge extending longitudinally therealong for engagement with a floor or ceiling. plate, a metallic lath engaging the other angular portion of the screed, a second screed, and means for connecting the said second screed with said lath and With the first mentioned screed.

5. In a fire proof partition, the combination of a pair of ceiling plates each having a substantial U-form in cross section, a tie plate extending from one of said ceiling plates to another, for connecting the ceiling plates, screeds having inner longitudinal reverting edges engaging the inner side lsurfaces of the ceiling plates, and having outer l shaped port-ions, and metal laths mounted upon the l shaped portions of the screeds.

6. In a fire proof partition, the combination of a pair of ceiling plates each having a substantial U-form in cross section, a tie plate extending from one of the ceiling plates to another for connecting the same, screeds having inner longitudinal reverting edges engaging the inner side surfaces of the ceiling plates and having outer L-shaped portions, tie plates connecting the screeds, and metal laths mounted upon the lL-shaped portions of the screeds.

7. A rc proof partition comprising floor plates and ceiling plates having angular slots, screeds substantially L-shaped in cross section, each having slotted ends for engagement within the slots of the floor and ceiling plates and a longitudinal reverting edge along one portion which engages the adjacent side surfaces of the floor and ceiling plates, and a metallic lath mounted upon the other portion of the screeds.

8. In a fire proof partition, a screed substantially L-shaped in cross section and one angular portion of which has a free angular reverting edge extending longitudinally therealong for engagement with a floor or ceiling plate, and a metallic lath secured to the other angular' portionof the screed, all for the purpose described.

y Miosnv Dawson. Witnesses: 'i

VIOLA DAWSON, W. N. CRANDALL. 

